Need help with this one

D.

Explanation: For A, you’d need to compare the old generation’s mistakes with your generation’s solutions. For B, it’s asking for YOUR opinion, so you simply have to say what you think. For C, you’d need to conduct a survey with the youth about anti-smoking ads. For D, you’d not only need to conduct a survey, but you’d also have to test it out yourself and search up facts about both. Therefore, your answer is D.

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